 Another M-class (series XII) submarine was found in July 2015 by divers from Aquarius Dive Center Constanta, in front of Costinesti, at an approximate depth of .It is believed to be either "M-34" or "M-58", both being lost to Romanian minefields.The submarine is buried in the sand up to the deck level, and also completely filled with sand, making any further identification almost impossible.